RN732ATTD2002B25 Equivalent & Substitute Parts

Part Overview

The RN732ATTD2002B25 is a 20 kOhms ±0.1% 0.1W (1/10W) chip resistor in 0805 (2012 Metric) package manufactured by KOA Speer Electronics, Inc. This thin film, moisture-resistant component operates across -55°C to 155°C with a temperature coefficient of ±25ppm/°C. The part is currently obsolete, with 1056 pieces available in new original stock. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Key Parameters

Parameter	Value
Resistance	20 kOhms
Tolerance	±0.1%
Power Rating	0.1W (1/10W)
Package / Case	0805 (2012 Metric)
Composition	Thin Film
Temperature Coefficient	±25ppm/°C
Operating Temperature Range	-55°C ~ 155°C
Moisture Sensitivity Level	1 (Unlimited)
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the RN732ATTD2002B25 is determined by strict adherence to the following electrical and mechanical parameters:

Critical Parameters (Must Match):

Resistance value: 20 kOhms
Tolerance: ±0.1%
Package / Case: 0805 (2012 Metric)
Composition: Thin Film
Temperature Coefficient: ±25ppm/°C
Operating Temperature Range: -55°C ~ 155°C
Moisture Sensitivity Level: 1 (Unlimited)

Flexible Parameter (Allows Substitution):

Power Rating: The original part is rated 0.1W (1/10W). Substitute parts with equal or higher power ratings (0.125W, 0.25W) are acceptable, as higher power ratings provide equal or superior performance in the same package footprint.

Compliance Considerations:

RoHS3 compliance is maintained across all active substitute parts
REACH status and ECCN classifications are consistent across the product family

Substitute parts are grouped into three categories based on power rating: equal power (0.1W), higher power (0.125W), and highest power (0.25W).

Parameter Comparison

Manufacturer Part Number	Manufacturer	Resistance	Tolerance	Power (W)	Composition	Temp Coeff (ppm/°C)	Operating Temp (°C)	Package	Product Status	RoHS Status
RN732ATTD2002B25	KOA Speer Electronics, Inc.	20k	±0.1%	0.1	Thin Film	±25	-55 ~ 155	0805	Obsolete	ROHS3
RN73R2ATTD2002B25	KOA Speer Electronics, Inc.	20k	±0.1%	0.125	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
3-2176093-2	TE Connectivity Passive Product	20k	±0.1%	0.25	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
ACPP0805 20K B	Ohmite	20k	±0.1%	0.1	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
CPF0805B20KE	TE Connectivity Passive Product	20k	±0.1%	0.1	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
CPF0805B20KE1	TE Connectivity Passive Product	20k	±0.1%	0.1	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
CRT0805-BY-2002ELF	Bourns Inc.	20k	±0.1%	0.125	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
RNCF0805BKE20K0	Stackpole Electronics Inc	20k	±0.1%	0.25	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
RT0805BRD0720KL	YAGEO	20k	±0.1%	0.125	Thin Film	±25	-55 ~ 155	0805	Active	ROHS3
TNPW080520K0BETY	Vishay Dale	20k	±0.1%	0.125	Thin Film	±25	-55 ~ 125	0805	Active	RoHS non-compliant
1676250-5	TE Connectivity Passive Product	20k	±0.1%	0.1	Thin Film	±10	-55 ~ 155	0805	Active	Not applicable

Engineering Selection Recommendations

Direct Equivalents (0.1W Power Rating):

ACPP0805 20K B (Ohmite) and CPF0805B20KE / CPF0805B20KE1 (TE Connectivity Passive Product) are direct electrical and mechanical equivalents to the RN732ATTD2002B25. All three parts share identical resistance, tolerance, power rating, package, temperature coefficient, and operating temperature range. ACPP0805 20K B and CPF series parts are active products with ROHS3 compliance and unlimited moisture sensitivity rating. These parts are suitable for direct substitution without design modification.

Higher Power Alternatives (0.125W and 0.25W Ratings):

Parts with 0.125W or 0.25W power ratings provide superior thermal performance in the same 0805 package footprint. These include:

RN73R2ATTD2002B25 (KOA Speer, 0.125W, Active, ROHS3, AEC-Q200)
CRT0805-BY-2002ELF (Bourns, 0.125W, Active, ROHS3, Current Sense feature)
RT0805BRD0720KL (YAGEO, 0.125W, Active, ROHS3, highest inventory availability at 49,502 pieces)
3-2176093-2 (TE Connectivity, 0.25W, Active, ROHS3)
RNCF0805BKE20K0 (Stackpole, 0.25W, Active, ROHS3, AEC-Q200)

Higher power-rated parts are acceptable substitutes when the circuit design permits, as they operate within the same electrical specifications while providing additional thermal margin.

Compliance Considerations:

All recommended substitute parts maintain ROHS3 compliance except TNPW080520K0BETY (Vishay Dale), which is RoHS non-compliant and has a reduced operating temperature upper limit of 125°C. TNPW080520K0BETY is suitable only for applications where RoHS non-compliance is acceptable and operating temperatures do not exceed 125°C.

Upgrade Option:

1676250-5 (TE Connectivity) offers an improved temperature coefficient of ±10ppm/°C compared to the original ±25ppm/°C specification, providing enhanced precision for applications requiring tighter tolerance performance.

Frequently Asked Questions (FAQ)

Q: Can I substitute a 0.125W or 0.25W rated resistor for the original 0.1W part?

A: Yes. Higher power ratings in the same package footprint are acceptable substitutes. The 0805 package dimensions remain constant across all power ratings listed. A higher power rating indicates the component can dissipate more heat without exceeding temperature limits, making it suitable for applications designed for the lower-rated original part.

Q: Are all substitute parts ROHS3 compliant?

A: No. TNPW080520K0BETY (Vishay Dale) is RoHS non-compliant. All other substitute parts listed are ROHS3 compliant. Verify compliance requirements for your application before selection.

Q: What is the difference between CPF0805B20KE and CPF0805B20KE1?

A: Both parts are electrically and mechanically identical 20 kOhms ±0.1% 0.1W thin film resistors in 0805 package. The suffix difference reflects manufacturing or packaging variants. Both are active products with identical specifications and are interchangeable.

Q: Does the temperature coefficient difference in 1676250-5 affect compatibility?

A: The 1676250-5 has a ±10ppm/°C temperature coefficient compared to ±25ppm/°C in the original part. This represents improved precision and stability over temperature. It is compatible with the original design and provides enhanced performance for precision applications. However, verify that your circuit design does not depend on the original tolerance specification.

Q: Which substitute part has the highest inventory availability?

A: RT0805BRD0720KL (YAGEO) has the highest inventory at 49,502 pieces in new original stock. This part is rated 0.125W and is ROHS3 compliant, making it suitable for high-volume production requirements.

Q: Can I use TNPW080520K0BETY if my application operates above 125°C?

A: No. TNPW080520K0BETY has a maximum operating temperature of 125°C, while the original part and most substitute parts are rated to 155°C. If your application requires operation above 125°C, select an alternative substitute part with a 155°C upper temperature limit.

Q: Are there any automotive-qualified alternatives?

A: Yes. RN73R2ATTD2002B25 (KOA Speer) and RNCF0805BKE20K0 (Stackpole) both carry AEC-Q200 automotive qualification. These parts are suitable for automotive applications requiring qualified component status.

Q: What is the difference between Tape & Reel (TR) and Cut Tape (CT) packaging?

A: Tape & Reel packaging is supplied on continuous reels for automated assembly equipment. Cut Tape & Digi-Reel packaging is supplied in smaller quantities on tape segments. RT0805BRD0720KL is available in Cut Tape & Digi-Reel format, while most other substitutes are supplied in Tape & Reel format. Verify packaging compatibility with your assembly process.

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